Bowling (ten pin)

The object of ten-pin bowling is to throw a bowling ball down the lane and knock over as many pins as possible.

A turn is called a "frame". During a frame you get two tries to knock down all ten pins. If you get them all on the first throw, this is called a strike. If you get them all with both throws, this is called a spare. If you leave some pins standing, this is called an open frame.

Scoring
You get 1 point for each pin that you knock over.

If you get a spare then you get 10 points plus a bonus which is the number of pins that you knock over with the next throw.

If you get a strike then you get 10 points plus a bonus which is the number of pins that you knock over with the next two throws.

Thus it is possible to get up to 30 points per frame. There are 10 frames per game. The maximum score is 300.